Vital Saunas Canadian Hemlock Premier Four Sauna with Magnetic Flux Therapy Upgrade Made with Hemlock wood, for a beautifully strong and durable built. Full Coverage - 11 Vital Rays Far Infrared Carbon Heaters 5006 Square Inches of Heat Surface Area! Easy digital control panels w/ digital LED display. Two control panels, one outside and one inside the sauna for easier access. OXYGEN IONIZER with AROMATHERAPY - The oxygen ionizer purify the air with a dispenser of natural floral fragrances is included in all our saunas.